yāvatā syāt sva-nirvāhaḥ svīkuryāt tāvad artha-vit
yāvatā syāt sva-nirvāhaḥ svīkuryāt tāvad artha-vit |
ādhikye nyūnatāyāṁ ca cyavate paramārthataḥ ||
(Nāradīya Purāṇa; cited in Bhakti-rasāmṛta-sindhu: 1.2.108)
“One who is sagacious [lit., ‘a knower of utility’] should accept as much as shall be supportive for oneself. One becomes deviated from the ultimate goal as a result of excess and deficiency.”